GWD-23-Q31(TN 17-13) after habitat loss???

zshaoqing

According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.

A. threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems

B. threat, after habitat loss, to native species of plants and animals and for maintaining biologically diverse ecosystems

C. threat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems

D. threat to native species of plants and animals and for maintaining biologically diverse ecosystems, after habitat loss

E. threat to native species of plants and animals as well as to maintaining biologically diverse ecosystems, after losing their habitat

不懂为什么会是after habitat loss，C不行么？？？

sisichen666

their指代错误，应该是本土的动植物受到威胁，领地loss，而不是入侵的物种

sdcar2010

If invasive plants lost their habitat, are they still INVASIVE plants?

zshaoqing

不能是invasive plants 么

sdcar2010

-- after losing their habitat --

To whom is "their" referring to?